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Oval|Natural|HRD

1.51ct K SI2 Oval Natural Diamond

ID • K/SI2 • HRD 220000073717

Shape and cutting style on the report: Oval (variation)

Certificate HRD 220000073717

Diamond specifications and retailer prices

From £1,492 GBP
As of November 5, 2026
Save £5,317 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £6,809 GBP at Allurez · As of November 5, 2026
View at Allurez

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 220000073717. Listed at 12 retailers as of November 5, 2026, with prices from £1,492 to £6,809, a £5,317 spread on the same certified stone. Allurez lists it at £6,809. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabHRD
CertificateHRD 220000073717
Dimensions9.82 × 6.11 × 3.94 mm
L/W Ratio1.61
Girdle conditionFaceted
Culet sizeNone
Top View
9.82 mm6.11 mm1.51 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateHRD 220000073717
Side View
Table 64.0%CrownGirdle: MediumPavilionCulet: 0.0Depth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £6,809 GBP|Low: £1,484 GBP|High: £6,809 GBP|Avg: £2,348 GBP
Allurez
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 7£1,492 GBP
Retailer 5£1,576 GBP
Retailer 9£1,580 GBP
Retailer 13£1,580 GBP
Retailer 4£1,598 GBP
Retailer 10£1,653 GBP
Retailer 3£1,683 GBP
Retailer 14£1,711 GBP
Retailer 11£1,823 GBP
Retailer 2£2,146 GBP
Retailer 6£2,525 GBP
Retailer 8£2,767 GBP
Retailer 12£3,303 GBP
Allurez£6,809 GBP

31 data points across 14 retailers

12 retailers£1,492 GBP to £6,809 GBP

A
Cheapest Retailer
-
£1,492 GBP
Retailer 2
-
£1,580 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£1,580 GBP
View
A
Retailer 4
-
£1,598 GBP
View
A
Retailer 5
-
£1,653 GBP
View
B+
Retailer 6
-
£1,683 GBP
View
B+
Retailer 7
-
£1,711 GBP
View
B+
Retailer 8
-
£1,823 GBP
View
B+
Retailer 9
-
£2,146 GBP
View
B+
Retailer 10
-
£2,767 GBP
View
B+
Retailer 11
-
£3,303 GBP
View
Most Expensive
C
Allurez
5441780 · Nov 5
£6,809 GBP
$9,114 USD
View
11 more retailers have this diamond
Prices start from £1,492 GBPSave up to £5,317 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Oval
£1,492 GBP